Key Northern California Highway Closed as Snow Continues to Fall in the Blizzard-Hit Sierra Nevada

TRUCKEE, Calif.—A major highway was closed and ski resorts were shut down Sunday as the effects of a powerful blizzard continued to cause problems across the Sierra Nevada, and forecasters warned that more heavy snow was on the way for Northern California. Sections of Interstate 80 to the west and north of Lake Tahoe were made impassable by blowing snow piling up in lanes, with no estimate for reopening, the California Highway Patrol said. The CHP office in South Lake Tahoe warned motorists that tire chains for improved traction are required on most mountain routes. The online warning was accompanied by a photo of a big rig without chains stuck in whiteout conditions on a local road....